Hi Jason
Thanks for taking the time to reply. It's 'Sleep' on the Apple Menu and
CTRL-Eject, and that's what I mean - 'normal sleep'. :-) I think my
term of 'hibernate' is a hang-up from having a Windoze past life! I
have a widget that permits me to 'deep sleep' the Mac and that works
fine, but is (as you say) inconvenient. I've already tried resetting
the SMC, but it didn't make a difference.
Anyone else with any ideas on the possible cause?
Thanks, Graham
on 11/5/09 17:34 Jason Davies sent the following:
Graham Street wrote on 10/5/09 at 22:45
Most of the time, the MBP hibernates (and the resumes) perfectly. But
sometimes it doesn't hibernate. There's doesn't seem to be an obvious
reason and mostly the same apps are running at the times it works and
when it doesn't. I've disabled SmartReporter as I thought that was
causing the problem, but it hasn't changed things. This is what happens
...
do you mean hibernate ("deep sleep") specifically or just 'sleep'?
Deep sleep saves the contents of RAM tot he hard drive and is
normally only done when the machine is almost exhausted
battery-wise, and it takes noticably longer but is more stable
(eg if battery fully empties). AFAIK this can only be activated
by gentle hacking to operate all the time (eg through the System
Pref "Hibernate").
'Normal' sleep is much quicker and doesn't save the contents to
hard drive.
My last macbook (black edition) used to have a wake from sleep
problem, which sounds similar to what is happening to you
sometimes. My solution was to always use Hibernate, which is
slightly irratating as you can't slam the lid shut and pick it
up quickly -- you should not disturb it while it's saving to
disk, apparently. But I got tired of the black screen/force
restart cycle, losing work. I did reset the Power Manager and so
on to no avail. You could look up resetting SMC or whatever is
appropriate to your machine or look for Hibernate.
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